54 static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
57 static void uart_change_pm(struct uart_state *state,
73 	struct uart_state *state = port->state;  in uart_write_wakeup()  local
78 	BUG_ON(!state);  in uart_write_wakeup()
79 	tty_wakeup(state->port.tty);  in uart_write_wakeup()
84 	struct uart_state *state = tty->driver_data;  in uart_stop()  local
85 	struct uart_port *port = state->uart_port;  in uart_stop()
95 	struct uart_state *state = tty->driver_data;  in __uart_start()  local
96 	struct uart_port *port = state->uart_port;  in __uart_start()
104 	struct uart_state *state = tty->driver_data;  in uart_start()  local
105 	struct uart_port *port = state->uart_port;  in uart_start()
134 static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,  in uart_port_startup()  argument
137 	struct uart_port *uport = state->uart_port;  in uart_port_startup()
147 	uart_change_pm(state, UART_PM_STATE_ON);  in uart_port_startup()
153 	if (!state->xmit.buf) {  in uart_port_startup()
159 		state->xmit.buf = (unsigned char *) page;  in uart_port_startup()
160 		uart_circ_clear(&state->xmit);  in uart_port_startup()
172 		uart_change_speed(tty, state, NULL);  in uart_port_startup()
195 static int uart_startup(struct tty_struct *tty, struct uart_state *state,  in uart_startup()  argument
198 	struct tty_port *port = &state->port;  in uart_startup()
210 	retval = uart_port_startup(tty, state, init_hw);  in uart_startup()
225 static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)  in uart_shutdown()  argument
227 	struct uart_port *uport = state->uart_port;  in uart_shutdown()
228 	struct tty_port *port = &state->port;  in uart_shutdown()
259 	if (state->xmit.buf) {  in uart_shutdown()
260 		free_page((unsigned long)state->xmit.buf);  in uart_shutdown()
261 		state->xmit.buf = NULL;  in uart_shutdown()
432 static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,  in uart_change_speed()  argument
435 	struct uart_port *uport = state->uart_port;  in uart_change_speed()
498 	struct uart_state *state = tty->driver_data;  in uart_put_char()  local
500 	return __uart_put_char(state->uart_port, &state->xmit, ch);  in uart_put_char()
511 	struct uart_state *state = tty->driver_data;  in uart_write()  local
521 	if (!state) {  in uart_write()
526 	port = state->uart_port;  in uart_write()
527 	circ = &state->xmit;  in uart_write()
554 	struct uart_state *state = tty->driver_data;  in uart_write_room()  local
558 	spin_lock_irqsave(&state->uart_port->lock, flags);  in uart_write_room()
559 	ret = uart_circ_chars_free(&state->xmit);  in uart_write_room()
560 	spin_unlock_irqrestore(&state->uart_port->lock, flags);  in uart_write_room()
566 	struct uart_state *state = tty->driver_data;  in uart_chars_in_buffer()  local
570 	spin_lock_irqsave(&state->uart_port->lock, flags);  in uart_chars_in_buffer()
571 	ret = uart_circ_chars_pending(&state->xmit);  in uart_chars_in_buffer()
572 	spin_unlock_irqrestore(&state->uart_port->lock, flags);  in uart_chars_in_buffer()
578 	struct uart_state *state = tty->driver_data;  in uart_flush_buffer()  local
586 	if (!state) {  in uart_flush_buffer()
591 	port = state->uart_port;  in uart_flush_buffer()
595 	uart_circ_clear(&state->xmit);  in uart_flush_buffer()
608 	struct uart_state *state = tty->driver_data;  in uart_send_xchar()  local
609 	struct uart_port *port = state->uart_port;  in uart_send_xchar()
625 	struct uart_state *state = tty->driver_data;  in uart_throttle()  local
626 	struct uart_port *port = state->uart_port;  in uart_throttle()
648 	struct uart_state *state = tty->driver_data;  in uart_unthrottle()  local
649 	struct uart_port *port = state->uart_port;  in uart_unthrottle()
672 	struct uart_state *state = container_of(port, struct uart_state, port);  in do_uart_get_info()  local
673 	struct uart_port *uport = state->uart_port;  in do_uart_get_info()
719 			 struct uart_state *state,  in uart_set_info()  argument
722 	struct uart_port *uport = state->uart_port;  in uart_set_info()
802 		uart_shutdown(tty, state);  in uart_set_info()
904 			uart_change_speed(tty, state, NULL);  in uart_set_info()
907 		retval = uart_startup(tty, state, 1);  in uart_set_info()
912 static int uart_set_info_user(struct tty_struct *tty, struct uart_state *state,  in uart_set_info_user()  argument
916 	struct tty_port *port = &state->port;  in uart_set_info_user()
930 	retval = uart_set_info(tty, port, state, &new_serial);  in uart_set_info_user()
944 			struct uart_state *state, unsigned int __user *value)  in uart_get_lsr_info()  argument
946 	struct uart_port *uport = state->uart_port;  in uart_get_lsr_info()
958 	    ((uart_circ_chars_pending(&state->xmit) > 0) &&  in uart_get_lsr_info()
967 	struct uart_state *state = tty->driver_data;  in uart_tiocmget()  local
968 	struct tty_port *port = &state->port;  in uart_tiocmget()
969 	struct uart_port *uport = state->uart_port;  in uart_tiocmget()
987 	struct uart_state *state = tty->driver_data;  in uart_tiocmset()  local
988 	struct uart_port *uport = state->uart_port;  in uart_tiocmset()
989 	struct tty_port *port = &state->port;  in uart_tiocmset()
1003 	struct uart_state *state = tty->driver_data;  in uart_break_ctl()  local
1004 	struct tty_port *port = &state->port;  in uart_break_ctl()
1005 	struct uart_port *uport = state->uart_port;  in uart_break_ctl()
1016 static int uart_do_autoconfig(struct tty_struct *tty,struct uart_state *state)  in uart_do_autoconfig()  argument
1018 	struct uart_port *uport = state->uart_port;  in uart_do_autoconfig()
1019 	struct tty_port *port = &state->port;  in uart_do_autoconfig()
1035 		uart_shutdown(tty, state);  in uart_do_autoconfig()
1054 		ret = uart_startup(tty, state, 1);  in uart_do_autoconfig()
1079 uart_wait_modem_status(struct uart_state *state, unsigned long arg)  in uart_wait_modem_status()  argument
1081 	struct uart_port *uport = state->uart_port;  in uart_wait_modem_status()
1082 	struct tty_port *port = &state->port;  in uart_wait_modem_status()
1136 	struct uart_state *state = tty->driver_data;  in uart_get_icount()  local
1138 	struct uart_port *uport = state->uart_port;  in uart_get_icount()
1207 	struct uart_state *state = tty->driver_data;  in uart_ioctl()  local
1208 	struct tty_port *port = &state->port;  in uart_ioctl()
1223 		ret = uart_set_info_user(tty, state, uarg);  in uart_ioctl()
1229 		ret = uart_do_autoconfig(tty, state);  in uart_ioctl()
1252 		ret = uart_wait_modem_status(state, arg);  in uart_ioctl()
1273 		ret = uart_get_lsr_info(tty, state, uarg);  in uart_ioctl()
1277 		ret = uart_get_rs485_config(state->uart_port, uarg);  in uart_ioctl()
1281 		ret = uart_set_rs485_config(state->uart_port, uarg);  in uart_ioctl()
1284 		struct uart_port *uport = state->uart_port;  in uart_ioctl()
1298 	struct uart_state *state = tty->driver_data;  in uart_set_ldisc()  local
1299 	struct uart_port *uport = state->uart_port;  in uart_set_ldisc()
1302 		mutex_lock(&state->port.mutex);  in uart_set_ldisc()
1304 		mutex_unlock(&state->port.mutex);  in uart_set_ldisc()
1311 	struct uart_state *state = tty->driver_data;  in uart_set_termios()  local
1312 	struct uart_port *uport = state->uart_port;  in uart_set_termios()
1342 	mutex_lock(&state->port.mutex);  in uart_set_termios()
1343 	uart_change_speed(tty, state, old_termios);  in uart_set_termios()
1344 	mutex_unlock(&state->port.mutex);  in uart_set_termios()
1368 	struct uart_state *state = tty->driver_data;  in uart_close()  local
1373 	if (!state) {  in uart_close()
1376 		state = drv->state + tty->index;  in uart_close()
1377 		port = &state->port;  in uart_close()
1384 	uport = state->uart_port;  in uart_close()
1385 	port = &state->port;  in uart_close()
1410 	uart_shutdown(tty, state);  in uart_close()
1422 		uart_change_pm(state, UART_PM_STATE_OFF);  in uart_close()
1443 	struct uart_state *state = tty->driver_data;  in uart_wait_until_sent()  local
1444 	struct uart_port *port = state->uart_port;  in uart_wait_until_sent()
1503 	struct uart_state *state = tty->driver_data;  in uart_hangup()  local
1504 	struct tty_port *port = &state->port;  in uart_hangup()
1507 	pr_debug("uart_hangup(%d)\n", state->uart_port->line);  in uart_hangup()
1512 		uart_shutdown(tty, state);  in uart_hangup()
1518 		if (!uart_console(state->uart_port))  in uart_hangup()
1519 			uart_change_pm(state, UART_PM_STATE_OFF);  in uart_hangup()
1533 	struct uart_state *state = container_of(port, struct uart_state, port);  in uart_port_shutdown()  local
1534 	struct uart_port *uport = state->uart_port;  in uart_port_shutdown()
1558 	struct uart_state *state = container_of(port, struct uart_state, port);  in uart_carrier_raised()  local
1559 	struct uart_port *uport = state->uart_port;  in uart_carrier_raised()
1572 	struct uart_state *state = container_of(port, struct uart_state, port);  in uart_dtr_rts()  local
1573 	struct uart_port *uport = state->uart_port;  in uart_dtr_rts()
1595 	struct uart_state *state = drv->state + line;  in uart_open()  local
1596 	struct tty_port *port = &state->port;  in uart_open()
1616 	if (!state->uart_port || state->uart_port->flags & UPF_DEAD) {  in uart_open()
1621 	tty->driver_data = state;  in uart_open()
1622 	state->uart_port->state = state;  in uart_open()
1623 	state->port.low_latency =  in uart_open()
1624 		(state->uart_port->flags & UPF_LOW_LATENCY) ? 1 : 0;  in uart_open()
1630 	retval = uart_startup(tty, state, 0);  in uart_open()
1663 	struct uart_state *state = drv->state + i;  in uart_line_info()  local
1664 	struct tty_port *port = &state->port;  in uart_line_info()
1666 	struct uart_port *uport = state->uart_port;  in uart_line_info()
1689 		pm_state = state->pm_state;  in uart_line_info()
1691 			uart_change_pm(state, UART_PM_STATE_ON);  in uart_line_info()
1696 			uart_change_pm(state, pm_state);  in uart_line_info()
1992 static void uart_change_pm(struct uart_state *state,  in uart_change_pm()  argument
1995 	struct uart_port *port = state->uart_port;  in uart_change_pm()
1997 	if (state->pm_state != pm_state) {  in uart_change_pm()
1999 			port->ops->pm(port, pm_state, state->pm_state);  in uart_change_pm()
2000 		state->pm_state = pm_state;  in uart_change_pm()
2021 	struct uart_state *state = drv->state + uport->line;  in uart_suspend_port()  local
2022 	struct tty_port *port = &state->port;  in uart_suspend_port()
2076 	uart_change_pm(state, UART_PM_STATE_OFF);  in uart_suspend_port()
2085 	struct uart_state *state = drv->state + uport->line;  in uart_resume_port()  local
2086 	struct tty_port *port = &state->port;  in uart_resume_port()
2123 			uart_change_pm(state, UART_PM_STATE_ON);  in uart_resume_port()
2133 		uart_change_pm(state, UART_PM_STATE_ON);  in uart_resume_port()
2143 					uart_change_speed(tty, state, NULL);  in uart_resume_port()
2155 				uart_shutdown(tty, state);  in uart_resume_port()
2202 uart_configure_port(struct uart_driver *drv, struct uart_state *state,  in uart_configure_port()  argument
2234 		uart_change_pm(state, UART_PM_STATE_ON);  in uart_configure_port()
2258 			uart_change_pm(state, UART_PM_STATE_OFF);  in uart_configure_port()
2267 	struct uart_state *state = drv->state + line;  in uart_poll_init()  local
2275 	if (!state || !state->uart_port)  in uart_poll_init()
2278 	port = state->uart_port;  in uart_poll_init()
2283 		struct tty_port *tport = &state->port;  in uart_poll_init()
2309 	struct uart_state *state = drv->state + line;  in uart_poll_get_char()  local
2312 	if (!state || !state->uart_port)  in uart_poll_get_char()
2315 	port = state->uart_port;  in uart_poll_get_char()
2322 	struct uart_state *state = drv->state + line;  in uart_poll_put_char()  local
2325 	if (!state || !state->uart_port)  in uart_poll_put_char()
2328 	port = state->uart_port;  in uart_poll_put_char()
2394 	BUG_ON(drv->state);  in uart_register_driver()
2400 	drv->state = kzalloc(sizeof(struct uart_state) * drv->nr, GFP_KERNEL);  in uart_register_driver()
2401 	if (!drv->state)  in uart_register_driver()
2427 		struct uart_state *state = drv->state + i;  in uart_register_driver()  local
2428 		struct tty_port *port = &state->port;  in uart_register_driver()
2439 		tty_port_destroy(&drv->state[i].port);  in uart_register_driver()
2442 	kfree(drv->state);  in uart_register_driver()
2464 		tty_port_destroy(&drv->state[i].port);  in uart_unregister_driver()
2465 	kfree(drv->state);  in uart_unregister_driver()
2466 	drv->state = NULL;  in uart_unregister_driver()
2659 	struct uart_state *state;  in uart_add_one_port()  local
2670 	state = drv->state + uport->line;  in uart_add_one_port()
2671 	port = &state->port;  in uart_add_one_port()
2675 	if (state->uart_port) {  in uart_add_one_port()
2681 	state->uart_port = uport;  in uart_add_one_port()
2682 	uport->state = state;  in uart_add_one_port()
2684 	state->pm_state = UART_PM_STATE_UNDEFINED;  in uart_add_one_port()
2699 	uart_configure_port(drv, state, uport);  in uart_add_one_port()
2751 	struct uart_state *state = drv->state + uport->line;  in uart_remove_one_port()  local
2752 	struct tty_port *port = &state->port;  in uart_remove_one_port()
2758 	if (state->uart_port != uport)  in uart_remove_one_port()
2760 			state->uart_port, uport);  in uart_remove_one_port()
2769 	if (!state->uart_port) {  in uart_remove_one_port()
2806 	state->uart_port = NULL;  in uart_remove_one_port()
2847 	struct tty_port *port = &uport->state->port;  in uart_handle_dcd_change()
2919 	struct tty_port *tport = &port->state->port;  in uart_insert_char()